I sent out a money order to Mt. Gox cash exchange
Just a correction, I presume -- you sent a money order to MtGox's "official exchanger" for cash and money orders, Bitcoin Morpheus?http://bitcoinmorpheus.tumblr.com/how_to_buy_mt_gox_usd
and I was just curious to see if anyone has gotten burned using it. I tried using the search feature but could only find one person who has actually had success.
That exchange has been around for a long time and is generally known to provide good service, though I've not used that service myself. There were a couple of exceptions, but they were related to one-time incidents if I remember correctly (e..g, when PayPal cut them off, when panic buyers were panicking as the price was shooting up as they sat waiting for the post office, etc.)
The operator of that exchange, Morpheus, does have an account here on this forum.
Should you need to deposit cash again, you might want to consider the "deposit cash at any Wells Fargo or Chase" method offered by ExchB.